About 2,550 gallons.
Go to http://www.havuz.org/pool-calculators.htm
704.5 gallons (approx).
A 12-ft round pool with depth of 2 ft has a capacity of 1,692.2 gallons of water.
A 12-foot round pool with 3 feet of water depth contains about 2,550 gallons.
Approximately 1,700 gallons.
2,124 gallons of water.
A 12-foot round pool with 33-inches of water contains 2,336.4 gallons of water.